HOW TO KNOW THE SEAWEEDS 



143a Blade saucer-shaped, attached near the center to a short stipe. 

 Fig. 184 Constantinea 



Figure 184 



Fig. 184. Constantinea simplex Setchell 



An entire small plant, X 1.1. This is one of the most peculiarly 

 shaped of our Pacific Coast red algae. It occurs at low tide level from 

 central California to Washington. Another species inhabits the Puget 

 Sound region of Washington. 



143b Blade not saucer-shaped 144 



144a Thallus consisting of a single sessile or stipitate, fan-shaped pri- 

 mary blade (sometimes 2 or 3) which may be simple, divided or 

 lacerate; color brown or greenish 145 



144b Thallus simple or variously branched; if simple and broadly ex- 

 panded, at least not fan-shaped; if branched and dichotomous or 

 subdichotomous, any resulting fan-like form arises from the branch- 

 ing; color brownish, greenish or reddish 147 



141 



